Heater



Dec. 3, 1929. H. c. BAKER ET AL HEATER Filed Deo- 1924 2 Sheets-Sheet 1i/M MAM K4 1;

RE M A T TEIINIY Dec. 3, 1929.

H. C. BAKER ET AL HEATER u a n n I u n a INVEN Cl \5 TIEIRN IY PatentedDec. 3, i923 usir STATES PATENT OFFICE HEATER- Application filedDecember This invention relates to heaters, furnaces or stoves, of thehot air type.

This invention has utility when incorporated in a magazine type of solidfuel heater.

Referring to the d rawiugs Fig. 1 is a front el vation of aninstallation in accordance with the invention as incorporated in agarage heater;

Fig. 2 is a plan view. with parts broken away. of the heater of Fig. 1.;

Fig. 3 is a view in cross-seetiom with parts broken away. on an enlargedscale from the showing in Fig. 2; and

Fig. 4 is an enlarged view of the heater of Fig. 1, in front ele *ation,with parts broken away.

Spider 1 has central floor portion 2 provided with surrounding seat 3.Mounted 20 within the seat 3 and having this floor 2 as its bottom isash pit 4 terminating at its upper portion in seat 5. Engaging this seat5 is seat 6 of fire pot 7 terminating in upwardly open seat 3 into whichnests seat 9 of lower combustion chamber section 10. This lowercombustion chamber section 10 upwardly terminates in seat 11 forreceiving seat 12 of upper combustion chamber section 13. Thiscombustion ehan'iher section 13 provided,

spaced from its upper terminus with seat 14 with which courts flange 15of depending magazine 16 extending downward concentric of the combustionchamber sections l3, 10, to a region near the fire pot 7. These heat im-35 parting sect ons 7. 10. 13. are circular throughout their verticalseries extent.

The upper combustion chamber section 1?) beyond the seat 14 has seat 17upon which rests top 18 having removable lid 19 which on being openedmay permit the insertion of solid fuel into the tire pot 7 independentlyof any lateral access to said fire pot 7.

This top 18 has beyond its coaction with the combustion chamber section13 an openwork providing portion 20 as a radiator directly above theouter side of the upwardly narrowing chamber 13. This portion 20terminates in a downwardly extending skirt P 21. Outward from the seat 3of the floor portion 2, the spider 1 has spaced radially ex- 3, 1924.Serial No. 753,630.

tending arms to carry upwardly directed seat 22. From the ash pit 4there is doorway 23.

This doorway 23 carries hinges 24 mounting ash pit door 25 provided withcatch 26 and adjustable damper 27. Except for this ash pit doorway anddoor, there is a continuous hot air chamber provided about this innerstove or fuel carrying section housed by inner wall 28 and outer wall29. This housing 28. 29, is assembled with the openwork top 20 at theskirt 21 by bolts 30. The walls 28, 29, are spaced by washer 31 and theassembly completed by nuts 32 on the bolts 30. Bolts 33 through thelower portion of the wall 29 and through the seat flange 22. thencethrough the inner wall 28 have nuts 34 thereon. Accordingly. this doublewall housing or shell is an assembly securing means for this heater. Theseveral sections nest one within the other and the tire pot andcombustion chamber sections are sealed by stove. cement 35 between theirintcrfitting seat regions.

The ash pit 4 is provided with rear lug 36 and side lugs 37, 38. uponwhich is mounted grate 39 introduced through the door way 23. As sopositioned this grate 39 is located in proximity to ash throat 40 of thefire pot 7 providing a clearance for clinker removal. Th s grate 39 haslugs 41 which carry pull grate section 42 shiftable as to grate opening43 by handle 44 which also may serve as a shaker handle.

In the working of solid fuel and the ashes therefrom through thisstructure, access thereto is had only by way of the magazine 16 and theash pit doorway 23. The products of combustion may pass from thecombustion eh amber section 13 by fine section 45 to smoke flue 46. thedraft in which may be checked by check draft damper 47.

This structure as disclosed has special utility in its adaptation as agarage heater but may serve as a room heater for maintained operationwithout attention in other uses as may be found desirable. Vhere gas isavailable, and coal or other hard fuel is to be used only in emergency,there may be normal operation of the structure as a gas heater wheresuch gas is supplied by 1ine 48 past valve 49 to line 50 extendingthrough the housing 29, 28, to ring chamber 51 having annular series ofvent o enings 5:2 as a ring burner in the lower portion of the tire pot7. This lire pot T is made iii-laterally symmetrical and bosses 53diametrically disposed may have one thereof closed by plug 54. This is afeature of convenience in manufacture of the castings. The downwarddirected angle of the jets 2 prevent clogging thereof by the hard fuel.

\Vhat is claimed and it is desired to secure by Letters Patent 1. Astove comprising a base providing an ashpit floor and surrounding seatmeans with openwork radially outward from said ash pit floor. an ash pithaving a doorway, a cylindrically closed fire pot, a cylindricallyclosed combustion chamber having an intermediate diameter in excess ofthe diameter of the fire pot. a cover for the chamber providing openworkradially from the chamber, said base, pit, pot, chamber and cover beingin vertical series and having interfittin g seat means r therebetwecn,said base and cover having additional seats radially outward from saidopen work, a housing anchored with said additional seats to assemble thestove said housing comprising a pair of concentric walls spaced as toeach other to form a closed heat insulating chamber completelysurrounding the fire pot and combustion chamber, a door for the doorwayof the ashpit, a fuel supply magazine centrally from the upper portionof said chamber and below said cover, said housing providing, except asto said ash pit doorway, a cylindrical heat conducting jacket, and legsfor the base providing clearance for permitting draft intake through thebase openwork for flow upwardly within the housing in directing the heatfrom the combustion chamber upwardly for draft discharge through thecover openwork.

2. A hot air heater embodying an ash pit providing an annular seat aboutthe top thereof and a fire pot downwardly terminating in dependingfingers and provided intermediate its height and just above said fingerswith a ring chamber extending to provide an enlargement about theexterior of said pot, said enlargement coacting with said seat to mountthe tire pot tinge-r portion to protrude into the ash p1-t,anda housingfor the ash pit and fire pot.

3. A hot air heater embodying a. single wall tubular element downwardlyterminating in depending fingers, and an endless ring chamber extendingabout said element near the lower portion thereof and upwardly of saidfingers, said chamber beingintegral with said element and provided withorts directed into the tubular portion 0 the element toward a combustionpromoting draft clearance region provided by said fingers.

l. A single wall tubular element having a uniform taper from the toptoward the bot tom thereof as a restriction for fuel flow therethrough,and intermediate the element height an annular integral enlargement onthe exterior side of said element to form a ring thereabout with theelement wall tapering outwardly upward and inwardly dowm ward from saidring chamber. said ring hav-

